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QN908x: Configuration setting for QN and WLCSP package

Question asked by Ankur Rathi on Jan 9, 2020
Latest reply on Jan 21, 2020 by Estephania Martinez

Hi,
We have designed a product using QN908x chip, by taking into consideration provided in "Hardware Design Considerations document(AN11996)".
We have two dev boards one of which uses (QN9080CHN) i.e. QFN package whereas the other board uses (QN9083DUKZ) i.e WLCSP package.
We are facing a issue in the WLCSP configured setup:
The setup which uses QFN package boots up without any issues, where as in the case of WLCSP setup most of the time boot up process get struck and it takes around 15 second to recover and start.
We tried running simple Driver example codes which was part of the SDK but the end result is the sam. Also we tried configuring the different loadcap values (set using NVDS).Note: The design and the code for both the boards are same, We are using MCUXpresso IDE (V11.0.1 [Build 2563])for developing Firmware.Is their any specific settings/configurations need to be done specifically for WLCSP package.

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